From mboxrd@z Thu Jan 1 00:00:00 1970 From: Guo Ren Subject: [PATCH V3 05/26] csky: System Call Date: Wed, 5 Sep 2018 20:07:44 +0800 Message-ID: References: Return-path: In-Reply-To: In-Reply-To: References: Sender: linux-kernel-owner@vger.kernel.org To: linux-arch@vger.kernel.org, linux-kernel@vger.kernel.org, tglx@linutronix.de, daniel.lezcano@linaro.org, jason@lakedaemon.net, arnd@arndb.de Cc: c-sky_gcc_upstream@c-sky.com, gnu-csky@mentor.com, thomas.petazzoni@bootlin.com, wbx@uclibc-ng.org, ren_guo@c-sky.com, green.hu@gmail.com List-Id: linux-arch.vger.kernel.org Signed-off-by: Guo Ren --- arch/csky/include/asm/syscall.h | 69 +++++++++++++++++++++++++++++++++++++ arch/csky/include/asm/syscalls.h | 14 ++++++++ arch/csky/include/uapi/asm/unistd.h | 10 ++++++ arch/csky/kernel/syscall.c | 63 +++++++++++++++++++++++++++++++++ arch/csky/kernel/syscall_table.c | 13 +++++++ 5 files changed, 169 insertions(+) create mode 100644 arch/csky/include/asm/syscall.h create mode 100644 arch/csky/include/asm/syscalls.h create mode 100644 arch/csky/include/uapi/asm/unistd.h create mode 100644 arch/csky/kernel/syscall.c create mode 100644 arch/csky/kernel/syscall_table.c diff --git a/arch/csky/include/asm/syscall.h b/arch/csky/include/asm/syscall.h new file mode 100644 index 0000000..8966739 --- /dev/null +++ b/arch/csky/include/asm/syscall.h @@ -0,0 +1,69 @@ +#ifndef __ASM_SYSCALL_H +#define __ASM_SYSCALL_H + +#include +#include +#include + +static inline int +syscall_get_nr(struct task_struct *task, struct pt_regs *regs) +{ + return regs_syscallid(regs); +} + +static inline void +syscall_rollback(struct task_struct *task, struct pt_regs *regs) +{ + regs->a0 = regs->orig_a0; +} + +static inline long +syscall_get_error(struct task_struct *task, struct pt_regs *regs) +{ + unsigned long error = regs->a0; + + return IS_ERR_VALUE(error) ? error : 0; +} + +static inline long +syscall_get_return_value(struct task_struct *task, struct pt_regs *regs) +{ + return regs->a0; +} + +static inline void +syscall_set_return_value(struct task_struct *task, struct pt_regs *regs, + int error, long val) +{ + regs->a0 = (long) error ?: val; +} + +static inline void +syscall_get_arguments(struct task_struct *task, struct pt_regs *regs, + unsigned int i, unsigned int n, unsigned long *args) +{ + BUG_ON(i + n > 6); + if (i == 0) { + args[0] = regs->orig_a0; + args++; + i++; + n--; + } + memcpy(args, ®s->a1 + i * sizeof(regs->a1), n * sizeof(args[0])); +} + +static inline void +syscall_set_arguments(struct task_struct *task, struct pt_regs *regs, + unsigned int i, unsigned int n, const unsigned long *args) +{ + BUG_ON(i + n > 6); + if (i == 0) { + regs->orig_a0 = args[0]; + args++; + i++; + n--; + } + memcpy(®s->a1 + i * sizeof(regs->a1), args, n * sizeof(regs->a0)); +} + +#endif /* __ASM_SYSCALL_H */ diff --git a/arch/csky/include/asm/syscalls.h b/arch/csky/include/asm/syscalls.h new file mode 100644 index 0000000..c478830 --- /dev/null +++ b/arch/csky/include/asm/syscalls.h @@ -0,0 +1,14 @@ +// SPDX-License-Identifier: GPL-2.0 +// Copyright (C) 2018 Hangzhou C-SKY Microsystems co.,ltd. +#ifndef __ASM_CSKY_SYSCALLS_H +#define __ASM_CSKY_SYSCALLS_H + +#include + +long sys_cacheflush(void __user *, unsigned long, int); + +long sys_set_thread_area(unsigned long addr); + +long sys_csky_fadvise64_64(int fd, int advice, loff_t offset, loff_t len); + +#endif /* __ASM_CSKY_SYSCALLS_H */ diff --git a/arch/csky/include/uapi/asm/unistd.h b/arch/csky/include/uapi/asm/unistd.h new file mode 100644 index 0000000..6fc1448 --- /dev/null +++ b/arch/csky/include/uapi/asm/unistd.h @@ -0,0 +1,10 @@ +// SPDX-License-Identifier: GPL-2.0 +// Copyright (C) 2018 Hangzhou C-SKY Microsystems co.,ltd. + +#define __ARCH_WANT_SYS_CLONE +#include + +#define __NR_set_thread_area (__NR_arch_specific_syscall + 0) +__SYSCALL(__NR_set_thread_area, sys_set_thread_area) +#define __NR_cacheflush (__NR_arch_specific_syscall + 4) +__SYSCALL(__NR_cacheflush, sys_cacheflush) diff --git a/arch/csky/kernel/syscall.c b/arch/csky/kernel/syscall.c new file mode 100644 index 0000000..f0a1294 --- /dev/null +++ b/arch/csky/kernel/syscall.c @@ -0,0 +1,63 @@ +// SPDX-License-Identifier: GPL-2.0 +// Copyright (C) 2018 Hangzhou C-SKY Microsystems co.,ltd. +#include + +SYSCALL_DEFINE1(set_thread_area, unsigned long, addr) +{ + struct thread_info *ti = task_thread_info(current); + struct pt_regs *reg = current_pt_regs(); + + reg->tls = addr; + ti->tp_value = addr; + + return 0; +} + +SYSCALL_DEFINE6(mmap2, + unsigned long, addr, + unsigned long, len, + unsigned long, prot, + unsigned long, flags, + unsigned long, fd, + off_t, offset) +{ + if (unlikely(offset & (~PAGE_MASK >> 12))) + return -EINVAL; + return sys_mmap_pgoff(addr, len, prot, flags, fd, + offset >> (PAGE_SHIFT - 12)); +} + +struct mmap_arg_struct { + unsigned long addr; + unsigned long len; + unsigned long prot; + unsigned long flags; + unsigned long fd; + unsigned long offset; +}; + +SYSCALL_DEFINE1(mmap, + struct mmap_arg_struct *, arg) +{ + struct mmap_arg_struct a; + + if (copy_from_user(&a, arg, sizeof(a))) + return -EINVAL; + + if (unlikely(a.offset & ~PAGE_MASK)) + return -EINVAL; + + return sys_mmap_pgoff(a.addr, a.len, a.prot, a.flags, a.fd, a.offset >> PAGE_SHIFT); +} + +/* + * for abiv1 the 64bits args should be even th, So we need mov the advice forward. + */ +SYSCALL_DEFINE4(csky_fadvise64_64, + int, fd, + int, advice, + loff_t, offset, + loff_t, len) +{ + return sys_fadvise64_64(fd, offset, len, advice); +} diff --git a/arch/csky/kernel/syscall_table.c b/arch/csky/kernel/syscall_table.c new file mode 100644 index 0000000..79dfb52 --- /dev/null +++ b/arch/csky/kernel/syscall_table.c @@ -0,0 +1,13 @@ +// SPDX-License-Identifier: GPL-2.0 +// Copyright (C) 2018 Hangzhou C-SKY Microsystems co.,ltd. +#include +#include + +#undef __SYSCALL +#define __SYSCALL(nr, call) [nr] = (call), + +#define sys_fadvise64_64 sys_csky_fadvise64_64 +void * const sys_call_table[__NR_syscalls] __page_aligned_data = { + [0 ... __NR_syscalls - 1] = sys_ni_syscall, +#include +}; -- 2.7.4 From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from smtp2200-217.mail.aliyun.com ([121.197.200.217]:60149 "EHLO smtp2200-217.mail.aliyun.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727865AbeIEQix (ORCPT ); Wed, 5 Sep 2018 12:38:53 -0400 From: Guo Ren Subject: [PATCH V3 05/26] csky: System Call Date: Wed, 5 Sep 2018 20:07:44 +0800 Message-ID: In-Reply-To: References: In-Reply-To: References: Sender: linux-arch-owner@vger.kernel.org List-ID: To: linux-arch@vger.kernel.org, linux-kernel@vger.kernel.org, tglx@linutronix.de, daniel.lezcano@linaro.org, jason@lakedaemon.net, arnd@arndb.de Cc: c-sky_gcc_upstream@c-sky.com, gnu-csky@mentor.com, thomas.petazzoni@bootlin.com, wbx@uclibc-ng.org, ren_guo@c-sky.com, green.hu@gmail.com Message-ID: <20180905120744.LdcQFv8zQ1kcKlAiIPe5TBkqcS6e3qbQrKYrEX6LoBI@z> Signed-off-by: Guo Ren --- arch/csky/include/asm/syscall.h | 69 +++++++++++++++++++++++++++++++++++++ arch/csky/include/asm/syscalls.h | 14 ++++++++ arch/csky/include/uapi/asm/unistd.h | 10 ++++++ arch/csky/kernel/syscall.c | 63 +++++++++++++++++++++++++++++++++ arch/csky/kernel/syscall_table.c | 13 +++++++ 5 files changed, 169 insertions(+) create mode 100644 arch/csky/include/asm/syscall.h create mode 100644 arch/csky/include/asm/syscalls.h create mode 100644 arch/csky/include/uapi/asm/unistd.h create mode 100644 arch/csky/kernel/syscall.c create mode 100644 arch/csky/kernel/syscall_table.c diff --git a/arch/csky/include/asm/syscall.h b/arch/csky/include/asm/syscall.h new file mode 100644 index 0000000..8966739 --- /dev/null +++ b/arch/csky/include/asm/syscall.h @@ -0,0 +1,69 @@ +#ifndef __ASM_SYSCALL_H +#define __ASM_SYSCALL_H + +#include +#include +#include + +static inline int +syscall_get_nr(struct task_struct *task, struct pt_regs *regs) +{ + return regs_syscallid(regs); +} + +static inline void +syscall_rollback(struct task_struct *task, struct pt_regs *regs) +{ + regs->a0 = regs->orig_a0; +} + +static inline long +syscall_get_error(struct task_struct *task, struct pt_regs *regs) +{ + unsigned long error = regs->a0; + + return IS_ERR_VALUE(error) ? error : 0; +} + +static inline long +syscall_get_return_value(struct task_struct *task, struct pt_regs *regs) +{ + return regs->a0; +} + +static inline void +syscall_set_return_value(struct task_struct *task, struct pt_regs *regs, + int error, long val) +{ + regs->a0 = (long) error ?: val; +} + +static inline void +syscall_get_arguments(struct task_struct *task, struct pt_regs *regs, + unsigned int i, unsigned int n, unsigned long *args) +{ + BUG_ON(i + n > 6); + if (i == 0) { + args[0] = regs->orig_a0; + args++; + i++; + n--; + } + memcpy(args, ®s->a1 + i * sizeof(regs->a1), n * sizeof(args[0])); +} + +static inline void +syscall_set_arguments(struct task_struct *task, struct pt_regs *regs, + unsigned int i, unsigned int n, const unsigned long *args) +{ + BUG_ON(i + n > 6); + if (i == 0) { + regs->orig_a0 = args[0]; + args++; + i++; + n--; + } + memcpy(®s->a1 + i * sizeof(regs->a1), args, n * sizeof(regs->a0)); +} + +#endif /* __ASM_SYSCALL_H */ diff --git a/arch/csky/include/asm/syscalls.h b/arch/csky/include/asm/syscalls.h new file mode 100644 index 0000000..c478830 --- /dev/null +++ b/arch/csky/include/asm/syscalls.h @@ -0,0 +1,14 @@ +// SPDX-License-Identifier: GPL-2.0 +// Copyright (C) 2018 Hangzhou C-SKY Microsystems co.,ltd. +#ifndef __ASM_CSKY_SYSCALLS_H +#define __ASM_CSKY_SYSCALLS_H + +#include + +long sys_cacheflush(void __user *, unsigned long, int); + +long sys_set_thread_area(unsigned long addr); + +long sys_csky_fadvise64_64(int fd, int advice, loff_t offset, loff_t len); + +#endif /* __ASM_CSKY_SYSCALLS_H */ diff --git a/arch/csky/include/uapi/asm/unistd.h b/arch/csky/include/uapi/asm/unistd.h new file mode 100644 index 0000000..6fc1448 --- /dev/null +++ b/arch/csky/include/uapi/asm/unistd.h @@ -0,0 +1,10 @@ +// SPDX-License-Identifier: GPL-2.0 +// Copyright (C) 2018 Hangzhou C-SKY Microsystems co.,ltd. + +#define __ARCH_WANT_SYS_CLONE +#include + +#define __NR_set_thread_area (__NR_arch_specific_syscall + 0) +__SYSCALL(__NR_set_thread_area, sys_set_thread_area) +#define __NR_cacheflush (__NR_arch_specific_syscall + 4) +__SYSCALL(__NR_cacheflush, sys_cacheflush) diff --git a/arch/csky/kernel/syscall.c b/arch/csky/kernel/syscall.c new file mode 100644 index 0000000..f0a1294 --- /dev/null +++ b/arch/csky/kernel/syscall.c @@ -0,0 +1,63 @@ +// SPDX-License-Identifier: GPL-2.0 +// Copyright (C) 2018 Hangzhou C-SKY Microsystems co.,ltd. +#include + +SYSCALL_DEFINE1(set_thread_area, unsigned long, addr) +{ + struct thread_info *ti = task_thread_info(current); + struct pt_regs *reg = current_pt_regs(); + + reg->tls = addr; + ti->tp_value = addr; + + return 0; +} + +SYSCALL_DEFINE6(mmap2, + unsigned long, addr, + unsigned long, len, + unsigned long, prot, + unsigned long, flags, + unsigned long, fd, + off_t, offset) +{ + if (unlikely(offset & (~PAGE_MASK >> 12))) + return -EINVAL; + return sys_mmap_pgoff(addr, len, prot, flags, fd, + offset >> (PAGE_SHIFT - 12)); +} + +struct mmap_arg_struct { + unsigned long addr; + unsigned long len; + unsigned long prot; + unsigned long flags; + unsigned long fd; + unsigned long offset; +}; + +SYSCALL_DEFINE1(mmap, + struct mmap_arg_struct *, arg) +{ + struct mmap_arg_struct a; + + if (copy_from_user(&a, arg, sizeof(a))) + return -EINVAL; + + if (unlikely(a.offset & ~PAGE_MASK)) + return -EINVAL; + + return sys_mmap_pgoff(a.addr, a.len, a.prot, a.flags, a.fd, a.offset >> PAGE_SHIFT); +} + +/* + * for abiv1 the 64bits args should be even th, So we need mov the advice forward. + */ +SYSCALL_DEFINE4(csky_fadvise64_64, + int, fd, + int, advice, + loff_t, offset, + loff_t, len) +{ + return sys_fadvise64_64(fd, offset, len, advice); +} diff --git a/arch/csky/kernel/syscall_table.c b/arch/csky/kernel/syscall_table.c new file mode 100644 index 0000000..79dfb52 --- /dev/null +++ b/arch/csky/kernel/syscall_table.c @@ -0,0 +1,13 @@ +// SPDX-License-Identifier: GPL-2.0 +// Copyright (C) 2018 Hangzhou C-SKY Microsystems co.,ltd. +#include +#include + +#undef __SYSCALL +#define __SYSCALL(nr, call) [nr] = (call), + +#define sys_fadvise64_64 sys_csky_fadvise64_64 +void * const sys_call_table[__NR_syscalls] __page_aligned_data = { + [0 ... __NR_syscalls - 1] = sys_ni_syscall, +#include +}; -- 2.7.4